Chemicals and Drugs

Lactase-Phlorizin Hydrolase

A multifunctional protein that contains two enzyme domains. The first domain (EC 3.2.1.62) hydrolyzes glycosyl-N-acylsphingosine to a sugar and N-acylsphingosine. The second domain (EC 3.2.1.108) hydrolyzes LACTOSE and is found in the intestinal brush border membrane. Loss of activity for this enzyme in humans results in LACTOSE INTOLERANCE.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A multifunctional protein that contains two enzyme domains. The first domain (EC 3.2.1.62) hydrolyzes glycosyl-N-acylsphingosine to a sugar and N-acylsphingosine. The second domain (EC 3.2.1.108) hydrolyzes LACTOSE and is found in the intestinal brush border membrane. Loss of activity for this enzyme in humans results in LACTOSE INTOLERANCE.

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Classification

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Synonyms

11 entry terms
  • Lactase-Glycosylceramidase
  • Hydrolase, Lactase-Phlorizin
  • Lactase Glycosylceramidase
  • Lactase Phlorizin Hydrolase
  • Glycosyl Ceramidase
  • Glycosylceramidase
  • Phloretin-Glucosidase
  • Phlorizin Hydrolase
  • Ceramidase, Glycosyl
  • Hydrolase, Phlorizin
  • Phloretin Glucosidase

MeSH Record

Aspects Covered

29 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, analysis, antagonists & inhibitors, biosynthesis, blood, cerebrospinal fluid, chemical synthesis, chemistry, classification, deficiency, drug effects, economics, genetics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, physiology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, ultrastructure, urine.

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History Note

2014 (1992)

MeSH Record

Previous Indexing

  • Glucosidases (1966-1977)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Lactase-Phlorizin Hydrolase. Medical Subject Headings (MeSH). 2026. Unique ID D010694. http://id.nlm.nih.gov/mesh/2026/D010694
  2. Lactase-Phlorizin Hydrolase. In: Wikidata. https://www.wikidata.org/wiki/Q76604132